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United States Patent | 5,142,414 |
Koehler | August 25, 1992 |
The electrically actuated light filter operates in a cyclical temporal mode to effect a tristimulus-color light analyzer. Construction is based on a Fabry-Perot interferometer comprised of a high-speed movable mirror pair and cyclically powered electrical actuators. When combined with a single vidicon tube or a monochrome solid state image sensor, a temporally operated tristimulus-color video camera is effected. A color-generated is accomplished when constructed with a companion light source and is a flicker-free colored-light source for transmission type display systems. Advantages of low cost and small physical size result from photolithographic batch-processing manufacturability.
Inventors: | Koehler; Dale R. (1332 Wagontrain Dr., Albuquerque, NM 87123) |
Appl. No.: | 688891 |
Filed: | April 22, 1991 |
Current U.S. Class: | 359/578; 356/519; 359/579 |
Intern'l Class: | G01B 009/02 |
Field of Search: | 359/577,578,579,68,71 356/352,405,406 |
2534846 | Dec., 1950 | Ambrose et al. | 359/577. |
2804803 | Sep., 1957 | Edwards et al. | 359/578. |
3471217 | Oct., 1969 | Wright | 356/352. |
3612655 | Oct., 1971 | Buchan et al. | 356/352. |
3841734 | Oct., 1974 | Kermode | 359/578. |
3902012 | Aug., 1975 | Dalton et al. | 356/352. |
4222635 | Sep., 1980 | Julke | 356/352. |
4453804 | Jun., 1984 | Evans | 359/578. |
4825262 | Apr., 1989 | Mallinson | 356/352. |
4859060 | Aug., 1989 | Katagiri et al. | 356/352. |
4973131 | Nov., 1990 | Carnes | 356/352. |
5062689 | Nov., 1991 | Koehler | 359/227. |